Odpowiedź:
(3/4 - 2/3) * 4 i 4/5 = (9/12 - 8/12) * 4 i 4/5 = 1/12 * 24/5 = 2/5
3 * 2 i 2/3 - (2 i 1/4) ² = 3 * 8/3 - (9/4)² = 8 - 81/16 = 8 - 5 i 1/16 = 7 i 16/16 - 5 i 1/16 = 2 i 15/16
3 i 1/3 * (3 i 1/6 - 1 i 1/3) + (2/3)³ = 3 i 1/3 * (3 i 1/6 - 1 i 2/6) + (2/3)³ = 3 i 1/3 * (2 i 7/6 - 1 i 2/6) + (2/3)³ = 3 i 1/3 * 1 i 5/6 + (2/3)³ = 10/3 * 11/6 + 8/27 = 55/9 + 8/27 = 165/27 + 8/27 = 173/27 = 6 i 11/27
